带热电过冷CO_(2)跨临界热泵系统实验和仿真研究  

Experiment and slimulation of CO_(2) transcritical heat pump system with thermoelectric subcooling

作　　者：杨俊兰 王林秀 YANG Jun-lan;WANG Lin-xiu(School of Energy and Safety Engineering,Tianjin Chengjian University,Tianjin 300380,China)

机构地区：[1]天津城建大学能源与安全工程学院,天津300380

出　　处：《化学工程》2023年第5期76-81,共6页Chemical Engineering(China)

基　　金：天津市科技特派员项目(22YDTPJC00020);天津市教委项目(2019KJ113)。

摘　　要：CO_(2)跨临界热泵系统在制冷制热应用方面具有极大的潜能,为了更好地提高该系统的效率,通过实验及仿真对该系统性能进行研究。首先对系统进行了实验测试,然后运用集中参数法建立系统各部件模型,对系统性能进行模拟计算,并与实验值进行对比。分析CO_(2)质量流量、冷却水温度流量对系统制冷性能系数COP和制热性能系数COPh的影响。结果表明:COP/COPh随CO_(2)质量流量、冷却水流量的增大而增加;随冷却水温度的升高而减小。并且加过冷器之后系统的COP和COPh与不加过冷器相比,分别增加了4.19%和4.62%。同时模拟值与实验值的一致性较好,误差基本在10%以内,从而验证了模型的准确性。研究结果可为系统进一步优化提供理论支持。CO_(2) transcritical heat pump system has a lot of promise for cooling and heating applications.The system performance was studied through simulations and experiments to improve system efficiency.The system was first put to the test experimentally,after which each component′s performance was modeled using the centralized parameter technique.The simulated results were compared to the experimental ones.On the cooling performance coefficient COP and heating performance coefficient COPh of the system,the impacts of CO_(2) mass flow and cooling water temperature flow were studied.The findings indicate that when cooling water and CO_(2) mass flow increase,COP/COPh also rises.It falls as the temperature of the cooling water rises.Additionally,the system′s COP and COPh increase by 4.19%and 4.62%,respectively,compared with that without supercooler.The consistency between the simulated value and the experimental value is also good,and the error is often around 10%,demonstrating the model′s correctness.The findings of the study might offer theoretical justification for more system optimization.

关 键 词：热电过冷器 CO_(2)跨临界循环 仿真模型 性能分析 

分 类 号：TB61[一般工业技术—制冷工程] TB63.2